Building three-dimensional Pt catalysts on TiO2 nanorod arrays for effective ethanol electrooxidation |
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| Authors: | Xiaoshan HeChenguo Hu |
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| Affiliation: | Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044, PR China |
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| Abstract: | Pt nanoparticles on TiO2 nanorod arrays have been prepared and used for the electrooxidation of ethanol in acidic and alkaline media. The vertically aligned TiO2 nanorod arrays provide a three-dimensional frame for supporting Pt nanoparticles. FESEM and TEM show that the Pt nanoparticles about 3 nm in diameter are evenly distributed on the surface of TiO2 nanorods. Cyclic voltammetry and chronoamperometry are performed to investigate electrochemical properties of Pt/TiO2/Ti, Pt/C, and Pt/Ti electrocatalysts. The Pt/TiO2/Ti electrocatalyst shows better catalytic activity and higher catalytic stability compared with other electrocatalysts. |
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| Keywords: | Titania nanorod arrays Ethanol electrooxidation Platinum nanoparticles Fuel cell |
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